Preparation for dyeing hairs, furs, and the like.



Amman EBCLENBACH, onniissnirro PBEl-ABXATION'E'UB-DXEENG HAIBS, FUES, END-THE LIKE.

No Ilrawing.

'flessau, Germany, my post-office'addre'ss being Schillerstrass'e 5, Dessau; Germany, have invented certain new and "Improvements in New Preparations 'for Dyeing 4 Hairs, Furs, andthelike,of which'the 1501- after. thoroughly lowin is a specification. y s

In S. Patent No.'1,1'05,554, dated July 28, 1914, "I describe "and claimnewpreparawhich are composed of an aromatic para; diamin containing besides the two amino groups an-ifiorganicsubstituent, and of an aromatic meta-diamin which contains --besides the two amino groups an oxy'alkyl group. Now in the present application I claim as new preparationsfor dyeing hairs, furs and the like mixtures of aromatic, paradiamins of the general formula:

in which formulaR means an oxyalkyl group, such as OCH, or OC H The new preparations are most excellent dyes for hairs, furs and the like. They are to be used.

in combination with a suitable oxidizing agent, such as hydrogen peroxid. I obtain in this way fine black tints of a great stability.

The following examples may serve to illustrate my invention, the parts being by weight:

1. In order to prepare a new preparation for dyeing furs according to the present invention from para-toluylenediamin one may proceed as follows: Asuitable quantity of para toluylenediamin (NH, NH CH 1 4: 3) is converted into the sulfate, whereupon 108 parts of the sulfate thus obtained, ding it, are thoroughly mixed together w1th 54 parts of the sulfate I for this purpose 120 0*- n Spectfioatkm of Letters Patent. "Patented June 22, 1915. hppn aaon'mearbmar 21, 19:8. serial na 'ieaeea.

otmeta-diaminoanisol,this sulfate also previously having been thoroughly ground.

This mixture represents the new preparation and:may be used for instance as follows :-10- pa.rts of the new preparation above mentionedare dissolved in a suitable proportion of water whereupon 10 parts of a concentrated ammonium *hydroxid (0.91 Specific gravity) areadded; the solution is then diluted with water whereupon-150 parts of'hydrogen peroxid -(of abou3% tions "for dyeing hairs, furs and the hire,

about 8-10 hours the dyeing operation is finished, a deep and full bluish black being thus obtained. The furs are then thoroughly washed with water, dried and finished in the usual way. v

2. A new preparation for dyeing furs may also be obtained from 2-methoxy-1A-phen lenediamin (NH-,:NH :OOH =1:4:2 arts of'this base are thoroughly mixed w1th 80 parts of 2.4- diaminoanisol, each of the two ingredients having been very well ground before mixing them. In order to prepare a dye-bath from this preparation 8 parts of it are dissolved in about 1000 parts. of water whereupon 160 parts of hydrogenperoxidf' (about 3 per cent. strength) are added. The furs to be dyed are previously mordanted by introducing them into a bath which contains about 20 parts of the commercial pyrolignite of iron, (30 per cent.) The furs after remainingover night in this bath are squeezed without washing them and are then brought into the dye-bath as above prepared. The dyeing o eration takes about 12 hours a dull bluelack being thus obtained; the furs are then Well washed, dried and finished as usual.

. It is obvious that my present invention is not limited to the above examples or to the details given therein. First may be stated that the proportions of theingredients may be varied in order to obtain the best result; the special proportions of the respective para-diamin and meta-diamin depend to a great deal upon the desired shade and on the other hand uponthe s ecial nature'of the hairs or the furs to be yed.

Of course my new reparations may be ofiered to the trade ei her in solution or in the solid state. Inapplying the new preparations for dyeing furs and the like one may proceed according to the indications given in the above examples. If my new. preparations are offered to the trade in solution these may be diluted with water to a suitable concentration and then a suitable oxidizing agent, such as hydrogenperoxid is added, thus giving a dye-bath ready for in- I troducmg the furs or the halrs to be dyed. Having now described my invention and manner in which it may be performed, what I Ciftiff! is,

1. As compositions of matter new preparations for dyeing hairs, furs and the iii'e, comprising an aromatic paradiamin of the general formula:

' NHII) in which formula R means an organic substituent, and an aromatic meta-diamin of the general formula:

cu, NH 2 first in which formula R means an oxyalkyl group, which new preparations in the dry statewhen powdered form gray to black powders being rather soluble in water, and 40 In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

Witnessesz y Rononrn Fmoxn, Donn KRAHL.

metai ARNOLD ERLENBACH. I 

